Earlier this month a crazed Jessie J allowed a pair of hair clippers to be taken to her beautiful head to shave off her locks in the name of charity.

But the
big baldy pop star appears to have got bored with her new look already – the Price Tag singer has dyed her cropped do blonde.

Jessie, who celebrated her 25th birthday on Wednesday, had her hair whipped off her head by Comic Relief co-founder Lenny Henry this month and raised an impressive £500,000 as a result.

Jessie may have been planning to audition as Debbie Harry's replace in popular US band from the 70s and 80s, Blondie (Photo: INSTAGRAM)

At the time , the J-bird repeatedly touched her bumpy little skull in apparent disbelief even though she had time to get used to the idea as she waited until she became more famous in a bid to raise more funds.

During the big shave, Jessie said: “It's the weirdest feeling... It feels so liberating.”

But the Essex-born warbler soon beamed with delight after being told how much she had raised with her new cut.

Erm, Jess mate... you're only wearing half a wig... Oh! So sorry! You only have half your hair on your head (Photo: BBC)

She said: “I feel exhilarated to be able to raise money for people who aren't fortunate enough to say something and be heard. I wanted to do something that wasn't just for today – it's going to last a few months.”

And Jessie's joyful feelings have continued through to her her 25th birthday this week.

Thanking fans for their well wishes in the early hours of Wednesday morning, she tweeted: “I have no signal where I am so I'm hoping this sends!! Thank you in advance for all the birthday tweets and messages!!! I feel so happy right now!!! I'm 25!!! Waaahhh!!! #birthdaymadness”

Jessie got so cold due to the lack of hair on her head that she glued two friends to her body for warmth while looking pleased with her new hair colour (Photo: INSTAGRAM)